Accidents become more spectacular and a little more realistic. By default, the car in the game after a flip on its side or roof rarely did somersaults and most often just rolled like a tin can, which looked extremely miserable. This modification is just some attempt to fix the crash situation. At least now they look more impressive. After installation, try to roll over the car at speed and you will understand what has changed. Try to tip the car over on its side right at speed, running into a springboard or something similar. Now so are those cars that you crash into at speed, if they roll over, they will do several somersaults through the side, depending on the strength of the impact. For this, it is desirable to use something heavy.